The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · issued

SA00291BO

Installation of a Lycoming IO-390-A1A6 engine and MT-Propeller MTV-12-B/188-59b propeller. Held by Aerodyme CORP, which holds 8 approved modifications in all. Last revised November 12, 2009. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Commander Aircraft Company; Commander Aircraft Company
Models
112, 112B
Type certificates
A12SO, A12SO
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 8, 2026.